Force sqlx-core to be at 0.5.1

Cargo.toml

@@ -36,6 +36,7 @@ log = "*"
 serde = "*"
 serde_json = "1"
 sha2 = "0.9"
+sqlx-core = "=0.5.1"
 thiserror = "*"
 time = "0.2"
 tokio = { version = "1.2.0", features = ["full"] }